Talking-machine.



M. NYSTROM.

I lTALKING MACHINE.

APPLICATION meu JUNE 11. Isle.

Patented Mar. 26, 1918;

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m y R Sm h lh N 524., 42M mi imTIN' STROM, O\CHICAGO, ILLINOIS, ASSIGNOR T0 THE BRUNSWICK-BALES- COLLENDEB. COMPANY, F CHICAGO, ILLINOIS, A CORPORATION O lF IIDEI.)AVVAJR'E.`

` TALKING-MACHINE.

Speecation of Letters Patent.

Patented Mar.. 26, 1916..

i Application led .Tune 17, 1916. Serial No. 104,144.

To all whom t may concern.'

Be it known that I, MARTIN NYsTRoM, a citizen of the United States, residingy at Chicago, in the county of Cook and State of ing machines and more particularly to sound reproducing means of novel construction. y

It 1s an object of my invention to provlde a sound reproducing means of simple and relatively inexpensive character in which the diaphragm bears a normally fixed relation to the record table.

A further object of my invention is the provision of sound reproducing means in which the vibrations set up by the record are transferred to the diaphragm in greatly amplified form. Y

Further objects and advantages of my invention will be apparent as it is better understood bly reference to the following specilfcation when read in connection with the accompanying drawing, illustrating the preferred embodiment thereof, in which- Figure 1 is a side elevation, partially in section, of-pa sound reproducing means according'to my invention;

Fig. 2 is a bottom plan view of a portion of the structure illustrated in Fig. 1;

Fig. 3 is a transverse section on the line 3-3 of Fig. 2, and

Fig. 4 is a transverse 4-4 of Fig. 1.

Referring to the drawing, 1 represents a stationary sound conducting tube which may be connected in any suitable manner to the sound-amplifying device (not shown). The forwardly projecting section 2 of the sound-conducting tube 1 is connected thereto by a slip-joint, a pin 3 on the section 2 section on the lin'e being arranged to engage a slot4 on the tube 1. A collar 5 having a slot 6 therein locks the pin 3 and Isecures the parts in assembled relation.

A sound box 6 is preferably formed integral with the section 2 and is provided with a diaphragm 7 held in position by threaded rings 8 and 9. A pin 10 is secured to and depends from y the diaphragm 7 and is loosely connected to a lever 11 carrying the stylus 12 which 'coperates with the record 13 on the record table 1t.

The lever 11 is ivoted at 15 on a weighted arm 16 supporte to move in vertical and horizontal planes.` IThe support for the arm 16 comprises a yoke 17 secured by screws 18 to the sound box 6. A cross bar 19 connects the arms of the yoke 17 adjacent the diaphragm 7. A member 20 is pivotally mounted on a depending portion 2,1 of the cross bar 19 and in an opening 22'in the bottom of the yoke 17 and is heldin assembled relation provided with an opening 24 which surrounds the member 20 and screws 25 are disposed through the arm 16 on either side of the opening 24 and engage the member 20. It will be readily understood, therefore, that the arm 16 has a universal movement with respect to the lsound box 6 and that, therefore, the stylus 12 is capable of movement transversely of the record 13 under the guidance of the grooves therein and of vertical movement to allow the stylus to be placed on the record as well as to allow for inequalities in the surface thereof while the sound box 6 remains stationary. An insert 26 of rubber or other suitable material is secured to the end of the lever 16 and engages the sound box 6 when the stylus 12 is not supported by a record.

From the foregoing description it will be apparent that l have devised sound-reproducing means involving a construction novel with the yoke by a screw 23. The arm 16 is in the art and having various material advantages among which is the possibility of calculating to a nicety the pressure exerted by the arm 16 on the stylus 12, and the delivery ofthe vibrations set up in the stylus, to the diaphragm in greatly amplilied form. Moreover,*myconstruction reduces the number of necessary joints to a minimum and improves the reproductive properties of the apparatus materially.`

It will be apparent thatvarious changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificin any of its material advantages, the form ereinbefore described being merely a preferred embodiment thereof.

ll claim:

1. In a talking machine, the combination of a stationary sound conducting means, a horizontally arranged sound box rioidly mounted thereon, a relatively heavy horizonsaid sound box and capable of swinging movement in horizontal and vertical planes, a relatively light lever extending longitudinally of and pivoted on said arm adjacent the free end thereof, a stylus on the outer end of said lever, and a pin secured to the diaphragm of said sound box and loosely connected to the inner end of said lever.

2. In a talking machine, the Acombination of' a stationary sound conducting means, a horizontally arranged sound box rigidly supported thereon, a yoice on Said sound box, a member apivotally mounted in said yoke, a relativ y heavy horizontally dis- I posed .arm pivotally supported at .one end 'on said member anc capable of swinging movement, in horizontal and vertical planes, a relatively light lever extending lon itudnelly of and pivoted on sald arm aiacent 'he free end thereof, a stylus on the outer beyond the other end thereof and mecano end of said lever, and a pin secured to the diaphragm of said sound box and loosely connected to the innerend of said lever.

In. a talking maehine,th`e combination of a stationary sound conducting means, a horizontally arranged sound box rigidly mounted thereon, a. lever loosely connected at one` end with the diaphragm ofthe sound boX and adapted to carry a stylus at its other end, an arm extending above the lever substantially from the stylus end of said lever Pivotelly engaged with said lever at a pointuremed from `Yits stylus and pivotally engaged with the Sound box'adacent the eoimeetion of the lever and sound box.

MARTIN NYSTROM. l/Vitnesses.:

H.. F. DAvENroRT,

-JoHN GBEASLEY. 

